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<html lang="zh">
<head>
  <meta charset="UTF-8">
  <title>表格</title>
</head>
<body>
cellspacing与cellpadding均为表格标签table的属性，其值的单位是像素（pixels）<br>
cellspacing表示单元格之间的距离<br>
cellpadding表示单元边沿与单元内容之间的距离<br>
<br>
colspan与rowspan均为单元格标签td的属性，其值必须是正整数<br>
colspan表示单元格可横跨的列数<br>
rowspan表示单元格可纵跨的行数<br>
<table border="1" cellspacing="0" cellpadding="0" bgcolor="orange" align="center" width="500">
  <tr align="center">
    <td height="100">A1</td>
    <td height="100" colspan="3">A2A3A4</td>
    <td height="100" rowspan="3">A5<br>B5<br>C5</td>
  </tr>
  <tr align="center">
    <td height="100" rowspan="2">B1<br>C1</td>
    <td height="100">B2</td>
    <td height="100">B3</td>
    <td height="100">B4</td>
  </tr>
  <tr align="center">
    <td height="100" colspan="2">C2C3</td>
    <td height="100">C4</td>
  </tr>
  <tr align="center">
    <td height="100" colspan="2">D1D2</td>
    <td height="100" rowspan="2" colspan="2">D3D4<br>E3E4</td>
    <td height="100" rowspan="2">D5<br>E5</td>
  </tr>
  <tr align="center">
    <td height="100">E1</td>
    <td height="100">E2</td>
  </tr>
</table>
</body>
</html>